He said: "We know it's going to be tough but there's no way we're going there scared of Chelsea. They're a good team but then so are we.
"I know it's a cliche but it's eleven against eleven on Sunday and if we play well we know we can get a result.
"What happened in Greece in midweek was disappointing and we all felt a bit down after that game. But we have worked hard in training all week and we can make amends on Sunday."